Giroscopio accionado por cuerda

youmagine

This is a toy consisting of a disc with two symmetrical and eccentric holes through which passes a closed cord. As the disc turns, the cord winds itself on both sides. When you tighten the strings, it unwinds and rewinds again, causing alternating turns in one direction or the other. You can see how to make it turn in this video: If you don't have metallic rings, you can print a pair of hoops by downloading the file published at: https://www.youmagine.com/designs/hoop-for-end-of-cord